Ill. Admin. Code tit. 35, § 1501.170 – Agency Authority and Inspections

a) All of the general powers necessary and convenient to implement and administer the DERT Fund Act are, except as otherwise provided in the DERT Fund Act, hereby vested in and may be exercised by the Agency, including the powers described in Section 25 of the DERT Fund Act. [415 ILCS 135/12(a)]
1. 1) Except as otherwise provided by law, the Agency may inspect any document in the possession of an owner, operator, service provider, or any other person if the document is relevant to a reimbursement claim or insurance claim, or may inspect a drycleaning facility for which a claim for benefits under the DERT Fund Act has been submitted. [415 ILCS 135/25(a)(7)]
2. 2) The Agency may, in accordance with constitutional limitations, enter at all reasonable times upon any private or public property for the purpose of inspecting and investigating to ascertain possible violations of the DERT Fund Act, any rule adopted under the DERT Fund Act including this Part, or any order entered pursuant to the DERT Fund Act. [415 ILCS 135/25(f)]
b) Nothing under the DERT Fund Act or this Part limits or impacts the authorities granted to the Agency under the EPAct or any other authority of the Agency under law or statute, including inspection, investigation, and enforcement authorities related to potential violations of the EPAct, rules, or orders under the EPAct.